curl编程访问https站点

Question

我下载了Curl的源代码并构建了库（libcurl.lib）。以下是从站点读取并转储内容的代码。 该代码在http网站上运行良好，而在https上运行失败。我尝试下载openssl库，但由于引发更多的链接器错误而无法链接它们。

处理此问题的最佳解决方案是什么？

#include "stdafx.h"
#include <iostream>
#include <string>
#include <curl/curl.h>


static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp)
{
    ((std::string*)userp)->append((char*)contents, size * nmemb);
    return size * nmemb;
}

int main(void)
{
    CURL *curl;
    CURLcode res;
    std::string readBuffer;
    std::string curl_url = "https://www.example.com/";
    curl = curl_easy_init();
    if(curl) {
        curl_easy_setopt(curl, CURLOPT_URL, curl_url.c_str());
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
        res = curl_easy_perform(curl);
        if (res != CURLE_OK) {
            std::cout << "Error from cURL: " << curl_easy_strerror(res) << std::endl;
        }
        curl_easy_cleanup(curl);
        std::cout << "Finished reading from the website" << std::endl;
        std::cout << readBuffer << std::endl;
    }
    return 0;
}